/*******************************************************************************
 * Copyright 2014 United States Government as represented by the
 * Administrator of the National Aeronautics and Space Administration.
 * All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package gov.nasa.ensemble.core.plan.editor.drudgery;

import gov.nasa.arc.spife.core.plan.editor.timeline.TimelineEditorPart;
import gov.nasa.arc.spife.core.plan.editor.timeline.TimelineEditorPart.DIRECTION;
import gov.nasa.ensemble.core.plan.editor.MultiPagePlanEditor;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PlatformUI;

public class MoveSelectionAction extends AbstractHandler {
	
	private final DIRECTION direction;

	public MoveSelectionAction(DIRECTION direction) {
		this.direction = direction;
		
	}

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		IWorkbench workbench = PlatformUI.getWorkbench();
		if (workbench != null) {
			IWorkbenchPage activePage = workbench.getActiveWorkbenchWindow().getActivePage();
			if (activePage != null) {
				IEditorPart activeEditor = activePage.getActiveEditor();
				if (activeEditor != null && activeEditor instanceof MultiPagePlanEditor) {
					IEditorPart currentEditor = ((MultiPagePlanEditor)activeEditor).getCurrentEditor();
					if (currentEditor != null && currentEditor instanceof TimelineEditorPart) {
						TimelineEditorPart timelineEditPart = (TimelineEditorPart)currentEditor;
						timelineEditPart.moveSelection(direction);
						return null;
					}
				}
			}
		}
		throw new ExecutionException("Could not find timeline instance");
	}
	
}
